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Discussion Starter · #1 ·
Last year I bought a projector mount of an NEC XG projector. I was informed that this mount also works for the NEC PG projectors, too. Recently, I bought a GE Imager 601 (NEC 6PG) and I would like to use this mount for this projector. See photo:

http://home.speedfactory.net/wanman/...m/P0000770.JPG


The following is a picture of the mounting bracket and L-plates. The mounting bracket gets mounted to the ceiling and the L-plates get bolted to the bottom of the projector. Problem: There are two ways one can mount the L-plates to the bottom of the projector.


Mounting the L-plates one places the pivot point forward, right where the forward-most bolts used to fasten the L-plates to the projector are located. Mounting the L-plates the other way places the pivot point 3" farther back, right where the rear-most bolts used to fasten the L-plates to the projector are located.


The reason why this makes a difference is that I am trying to determine my offset for the mounting bracket from the tapered edge of the ceiling. See this photo (which is to scale):

http://home.speedfactory.net/wanman/...Design_001.jpg


Having never installed a CRT before, I do not know where the pivot point should be. As such, I do not know which position to mount the L-plates, and as a result cannot determine the offset.


NOTE: This is for a 100" NTSC setup. The screen is 80"W and 60"H. According to the PG setup guide I know how far from the screen wall the back of the bracket must be, but I do not want to place the L-plates such that it will create an incorrect pivot point.
 

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Wanman,


The idea is to get the center of mass on the big center bolt of the mount. That way trhe unit us free to move up and down without more weight front or rear. That is the theory anyhow.

As I recal on the factory XG mounts, the PJ goes up andthen forward on the big bolt (I think).

So if I were you, what I would do is with two people on each side of the PJ, lift it slightly so that it will balance. That will be the center of mass. Now turn the GE over, and look at the mounting holes on the L brackets and the center of mass and the large pivot cutout and see if you can mount the L bracket so that the large pivot cutout is pn that center of mass.


Terry
 

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Discussion Starter · #3 ·
Ok, this is a test ... where the pivot point is almost directly above the forward mounting screws for the L-plates. I asked someone with a 6PG where his pivot points were, above the front pair or rear pair of mounting screws for his L-plates.


Now I know why some with shorter fuses (tolerances) than me mount their units on the floor. BTW, remember to turn DOWN the torque setting on your driver and shiny little things will result. LOL

http://home.speedfactory.net/wanman/...m/P0000775.JPG
http://home.speedfactory.net/wanman/...m/P0000776.JPG
 
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